A 16-called embryo is Called A Morula
Answer:
it depends on changes in gene expression
The answer is A (1) Prokaryotes
The word you're looking for is the Bowen's reaction.
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Earth's crust is made of rock, and rock is made of natural substances called minerals. There are three main types of rock: sedimentary, igneous, and metamorphic rock. Each type is produced in different ways. The oldest rocks on Earth were formed about 3.8 billion years ago.